We have a 99 KK, like this one. The awnings and walls 3/4 fill the box!
Been out to the shed with the tape: width 1030 (+45mm behind the strut), 535 deep & 390 high.
I've often pondered over making a new box with a slightly bigger stove, maybe one with an oven, but can't justify the $$! But I've got a ute with a kitchen set up in the canopy so the KK suits me!
The storage pod in the sink drawer is an absolute pain, as whatever you store in there you need when you've got stuff all over the top! But I still love the camper. Didn't cost the earth, and is well built and never let me down.
Any more questions fire away! Have fun with the search, Kris.